'Early embryo' diaporamas de présentation

Phylum Chordata

Phylum Chordata. The chordates are a group of particular interest to us as we belong to it, being members of the subphylum Vertebrata.

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Epigenetic and development

Epigenetic and development. By Nadia Hassan Sarrah Elnour Hamadnalla Mahmoud Omer Elkarouri. Prenatal Developments. Hundreds of millions of sperm cells are deposited in vagina during sexual intercourse. At the end one sperm fertilizes the ova. The embryo forms:

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Control of Gene Expression

Control of Gene Expression. Different cell types of a multi-cellular organism contain the same DNA. A mammalian neuron and a lymphocyte.

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Animal Development Drosophila axis formation Part 1: A-P patterning

Animal Development Drosophila axis formation Part 1: A-P patterning. petros.ligoxygakis@bioch.ox.ac.uk. Problem: starting point where all cells have the same developmental potential (because they have the same DNA).

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Animal Reproduction

Animal Reproduction. Types of Reproduction. Asexual. Sexual. Genetic diversity Advantage : ability to change pop. when env . changes Fusion of haploid gametes Egg (Ovum) + Sperm ? Zygote. Clone Advantage : FAST, if env . is stable

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Control of Gene Expression

Control of Gene Expression. S0matic cell nuclear transfer. Cloning. Somatic Cell Nuclear Transfer. Researchers clone animals by nuclear transplantation SOMATIC CELL NUCLEAR TRANSFER: A nucleus of an egg cell is replaced with the nucleus of a somatic cell from an adult

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Chapter 13

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Stem Cells

Stem Cells. Part 2. Review: As an organism develops, cells go from being all alike to forming the many different types of tissues ( differentiation ). A cell that has become a special type may be able to divide to make more of the same type, but cannot make different types.

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Cloning

Cloning. By C Kohn Dept of Agricultural Sciences Waterford, WI. Questions. By taking and planting a leaf cutting, you can create a new plant with identical DNA. Is this cloning? Why or why not? Could identical twins be considered clones? Why or why not?

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Oocyte - Cumulus Quality and cooculture : Benefit for implantation

Oocyte - Cumulus Quality and cooculture : Benefit for implantation Dr Moncef Benkhalifa , Ph.D . RBMG. Reproductive Biology & Genetics Technical & Development Director Eylau Laboratory . UNILABS PARIS-GENEVA.

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Bony Fish

Bony Fish. Chapter 12.3-12.4. Bony Fish. Phylum Cordata Class Osteichthyes About 95% of all the fish on Earth belong to this Class. Bony fish are vertebrates and their backbone is composed of individual bones called vertebrae. Fish Parts. Lateral Line Organ. Dorsal Fin. Swim Bladder.

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10.3

10.3. Regulation of Cell Growth. @The controls on cell growth and division can be turned on and off by contact.@

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Source: brainnurse

What is stem cell research? Stem cell research is a relatively new technology from the 19 th century that takes primitive human cells that have the potential to develop into most any of the 220 varieties of cells in the human body, including blood cells and brain cells.

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Plan B Controversy

Plan B Controversy. By: Lisa Morgan. Background Info. Plan B is used as an after-sex contraceptive used to prevent pregnancy. The law on Plan B currently states it must be sold behind a pharmacy counter with only individuals 17 or older eligible to purchase it. .

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Sperm Transport in the Female G enital Tract of D ifferent Animals

Sperm Transport in the Female G enital Tract of D ifferent Animals. Deposition of semen by male : Sperm deposited in the cranial part of the vagina of cow, sheep, bitch, queen, and primates. In the pig and horse the sperm is directly deposited in the cervix or uterus .

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Station 2: Specialized Cells

Station 2: Specialized Cells. Fertilization. During Fertilization the gametes unite to form the: zygote or fertilized egg . 23. +. 23. 46. The Zygote. 46. Contains the full amount of chromosomes, which is 46 The zygote then divides by mitosis to form a multi-cellular organism

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Is it possible to choose a baby based on its genes?

Is it possible to choose a baby based on its genes?. Should we choose a baby based on its genes?. Designer Babies. What is PGD?. The cells divide. This creates an embryo. The embryo is grown in an incubator for a short time. Each cell contains genes. embryo.

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